I spoke to a friend of mine (also owns a RIB) who remembers this boat when it came up for sale a few years ago...
It was orange at the time and he is 99% sure it came from P&O.
It was with these guys http://www.highwaymarine.co.uk who I don't reckon much on but they do a lot of brokering so this opinion may have little importance.
He bid £3k on the craft and was unsucessfull.
I had a "huge" steel structure on it which has since been removed
This means the current owner paid more than £3k, has done quite a lot of work (it appears and looks so) and if you are being offered this at anything near the auction end price on ebay then this guy is not exactly getting rich on this deal.

Having taken a look at the craft, however, i was not that impressed.
It's clearly not been used in any serious weather - most of the items neatly "stacked" on deck would self-destruct or fall out. There appears to be nowhere to stow anything "securly"
It was clearly oraange (still is below the water line by the looks of it)